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(Unicode C) SSH Quick/Simple Shell SessionSee more SSH ExamplesDemonstrates the simplified way to run multiple commands in a shell session on an SSH server.
#include <C_CkSshW.h> #include <C_CkStringBuilderW.h> void ChilkatSample(void) { HCkSshW ssh; int port; BOOL success; int channelNum; HCkStringBuilderW sbCommands; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. ssh = CkSshW_Create(); port = 22; success = CkSshW_Connect(ssh,L"the-ssh-server.com",port); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Authenticate using login/password: success = CkSshW_AuthenticatePw(ssh,L"theSshLogin",L"theSshPassword"); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Start a shell session. // (The QuickShell method was added in Chilkat v9.5.0.65) channelNum = CkSshW_QuickShell(ssh); if (channelNum < 0) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Construct a StringBuilder with multiple commands, one per line. // Note: The line-endings are potentially important. Some SSH servers may // require either LF or CRLF line endings. (Unix/Linux/OSX servers typically // use bare-LF line endings. Windows servers likely use CRLF line endings.) sbCommands = CkStringBuilderW_Create(); CkStringBuilderW_Append(sbCommands,L"echo hello world\n"); CkStringBuilderW_Append(sbCommands,L"date\n"); CkStringBuilderW_Append(sbCommands,L"df\n"); // For our last command, we're going to echo a marker string that // we'll use in ChannelReceiveUntilMatch below. // The use of single quotes around 'IS' is a trick so that the output // of the command is "THIS IS THE END OF THE SCRIPT", but the terminal echo // includes the single quotes. This allows us to read until we see the actual // output of the last command. CkStringBuilderW_Append(sbCommands,L"echo THIS 'IS' THE END OF THE SCRIPT\n"); // Send the commands.. success = CkSshW_ChannelSendString(ssh,channelNum,CkStringBuilderW_getAsString(sbCommands),L"ansi"); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); CkStringBuilderW_Dispose(sbCommands); return; } // Send an EOF to indicate no more commands will be sent. // For brevity, we're not checking the return values of each method call. // Your code should check the success/failure of each call. success = CkSshW_ChannelSendEof(ssh,channelNum); // Receive output up to our marker. success = CkSshW_ChannelReceiveUntilMatch(ssh,channelNum,L"THIS IS THE END OF THE SCRIPT",L"ansi",TRUE); // Close the channel. // It is important to close the channel only after receiving the desired output. success = CkSshW_ChannelSendClose(ssh,channelNum); // Get any remaining output.. success = CkSshW_ChannelReceiveToClose(ssh,channelNum); // Get the complete output for all the commands in the session. wprintf(L"--- output ----\n"); wprintf(L"%s\n",CkSshW_getReceivedText(ssh,channelNum,L"ansi")); // Here's our actual sample output: // Last login: Thu Dec 22 20:19:09 2016 from chilkat13 // // echo hello world // date // df // echo THIS 'IS' THE END OF THE SCRIPT // chilkatosx:~ chilkat$ echo hello world // hello world // chilkatosx:~ chilkat$ date // Thu Dec 22 20:30:48 CST 2016 // chilkatosx:~ chilkat$ df // Filesystem 512-blocks Used Available Capacity iused ifree %iused Mounted on // /dev/disk2 2176716032 265768928 1910435104 13% 33285114 238804388 12% / // devfs 383 383 0 100% 664 0 100% /dev // map -hosts 0 0 0 100% 0 0 100% /net // map auto_home 0 0 0 100% 0 0 100% /home // /dev/disk3s2 374668 374668 0 100% 93665 0 100% /Volumes/Google Chrome // chilkatosx:~ chilkat$ echo THIS 'IS' THE END OF THE SCRIPT // THIS IS THE END OF THE SCRIPT // chilkatosx:~ chilkat$ CkSshW_Dispose(ssh); CkStringBuilderW_Dispose(sbCommands); } |
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